Jeep Cherokee 6.1 SRT8 (jeep) 425 hp — Stage 1 file (+15 hp)

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Chip tuning for Jeep Cherokee 6.1 SRT8 (jeep) 425 hp ECU

Jeep Cherokee (2005) 6.1 SRT8 (jeep) 425 hp — mass-market petrol engine of the passenger segment of the Stellantis group (США, 1941). Stage 1 chip tuning raises power from 425 to 440 hp (+15 hp, +4%) and torque from 569 to 580 Nm (+11 Nm). ECU — Siemens/Continental GPEC2A. Flashing method: OBD or Bench depending on the unit's protection. A petrol engine built in 2005 — the era before widespread firmware encryption, OBD flash without complications.

Jeep is part of the Stellantis group (formerly FCA). Jeep specialises in four-wheel-drive off-roaders and crossovers. Trail Rated is Jeep's signature certification for off-road capability. The Jeep Trackhawk is the flagship, powered by the Hellcat-family supercharged Hemi V8. Jeep's petrol range comprises the Pentastar V6, the Hemi V8 and turbo four-cylinders. The Trackhawk and SRT have significant potential with supporting hardware.

The Jeep community in the US offers a large pool of ready-made Stage files for off-road use. In Europe the Jeep community is growing thanks to the diesel versions. With supporting hardware, the Trackhawk confidently reaches Stage 2. Top-tier Jeep Trackhawk/SRT engines sit at the power ceiling of American SUVs; the gain is significant.

Frequently asked questions

How much horsepower does Stage 1 add for the Jeep Cherokee 6.1 SRT8 (jeep) 425 hp?

Stage 1 chip tuning on the Jeep Cherokee 6.1 SRT8 (jeep) 425 hp boosts engine output by 15 hp: from 425 to 440 hp. Torque rises from 569 to 580 Nm (+11 Nm).

What changes in the Jeep Cherokee ECU after Stage 1?

Stage 1 chip tuning of the Jeep Cherokee is a rework of the ECU maps: boost pressure, ignition advance, target lambda and the removal of factory torque limiters. The gain is +15 hp with no hardware changes.

What is the Stage 1 potential of the Jeep Cherokee 6.1 SRT8 (jeep) 425 hp?

On the top-spec Jeep Cherokee 6.1 SRT8 (jeep) 425 hp engine, Stage 1 is the starting point before Stage 2 with a downpipe, intake and a larger intercooler. The mass-market factory calibration leaves substantial headroom for an aggressive software tune.

How much does Stage 2 add on the Jeep Cherokee?

Stage 2 for the Jeep Cherokee 6.1 SRT8 (jeep) 425 hp is Stage 1 plus hardware changes: a downpipe, a larger intake and a performance intercooler. The gain is considerably higher, but it requires professional component selection.

Which ECU is fitted to the Jeep Cherokee 6.1 SRT8 (jeep) 425 hp?

The Jeep Cherokee 6.1 SRT8 (jeep) 425 hp ECU is the Siemens/Continental GPEC2A. Production versions support OBD access; locked variants require Bench (BDM/JTAG).

What happens to the Jeep Cherokee warranty after chip tuning?

The factory warranty of the Jeep Cherokee does not remain valid after Stage 1 — the manufacturer withdraws its obligations once the ECU software is changed. CHIPOK provides its own warranty on its work and support.

How long does remapping the Jeep Cherokee take?

On the Jeep Cherokee 6.1 SRT8 (jeep) 425 hp: OBD flash 25-30 minutes, Bench (if required) about an hour. The file processing itself takes 5-30 minutes once the original bin is received.

Is the original file kept when chip tuning the Jeep Cherokee?

Yes, the original ECU firmware of the Jeep Cherokee 6.1 SRT8 (jeep) 425 hp is kept and can be flashed back at any time. Returning to stock via OBD takes 25-30 minutes.

What is the price of a Stage 1 remap for the Jeep Cherokee?

Stage 1 for the Jeep Cherokee 6.1 SRT8 (jeep) 425 hp is paid for with CHIPOK credits (1 cr = 1 €). The final amount is set in the calculator, taking the extra options (off functions) into account.

Last updated: 30.08.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno